Carbon Monoxide Detector

POCOHORSE

Troy & Tracy Chaddon
The Atwood/Kiddie CO detector that came with our 2010 North Trail has gone bad so we have been looked at replacements. The ones found at RV stores/dealerships are in the $80-$110 range but the ones found at home improvement stores are $20-$30. Can anyone tell me why the RV specific ones are so much more expensive? Do they have special features that are different than household models? We need a battery operated model and not one that is hard wired. We would like to replace the current one with one that has a similar hole pattern to avoid open holes on the wall but most of the new models are a rectangle shape .
Thanks again for your help
 

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